| CountOfUser ID | Full institution name |
| 2526 | Stanford University |
| 1077 | University of California Berkeley |
| 1038 | University of Wisconsin-Madison |
| 1026 | University of Toronto |
| 867 | University of Minnesota |
| 865 | MIT |
| 824 | University of Michigan |
| 795 | Pennsylvania State University |
| 774 | Indiana University |
| 759 | University of Pennsylvania |
| 741 | Purdue University |
| 729 | Harvard |
| 703 | University of Illinois at Urbana-Champaign |
| 701 | University of California Irvine |
| 618 | Michigan State University |
| 615 | University of Alberta |
| 599 | University of Illinois at Chicago |
| 593 | University of Texas - Austin |
| 590 | California Institute of Technology |
| 549 | University of California San Diego |
| 527 | Columbia University |
| 485 | Wayne State University |
| 471 | University of Chicago |
| 454 | Yale University |
| 413 | University of Pittsburgh |
| 412 | Emory |
| 412 | SUNY Stony Brook |
| 406 | Ohio State University at Columbus |
| 385 | University of Washington |
| 375 | Texas A&M University |
| 353 | University of Virginia |
| 345 | University of Rochester |
| 331 | Virginia Tech |
| 330 | University of Kentucky |
| 306 | SUNY Buffalo |
| 306 | University of Cinncinnati |
| 304 | University of North Carolina at Chapel Hill |
| 291 | Johns Hopkins University |
| 289 | University of Calgary |
| 279 | Boston College |
| 276 | North Carolina State |
| 268 | Rice University |
| 267 | Rutgers |
| 262 | Mercer University |
| 257 | Cornell |
| 256 | Washington University |
| 243 | Northwestern University |
| 241 | Notre Dame |
| 237 | Florida State University |
| 237 | Duke University |
| 237 | Iowa State University |
| 235 | Montana State University |
| 227 | University of Arizona |
| 210 | Instituto de Quimica-UNAM Ciudad Universitaria Coyoacan, Mexico |
| 209 | University of Southern California L.A |
| 208 | Vanderbilt |
| 204 | Virginia Commonwealth University |
| 204 | University of California Davis |
| 201 | University of Sherbrooke |
| 200 | Case Western University |
| 190 | University of Western Ontario |
| 179 | University of Connecticut |
| 178 | University of Utah |
| 177 | University of Iowa |
| 174 | Queens University, Kingston Ontario |
| 168 | Georgia Tech |
| 166 | University of Montreal |
| 162 | Brown |
| 158 | Worcester Polytechnic Institute |
| 156 | Princeton |
| 152 | University of Akron |
| 150 | North Dakota State University |
| 145 | Kent State |
| 144 | University of Georgia |
| 131 | Texas Christian University |
| 130 | Dartmouth |
| 125 | University of Tennessee Knoxville |
| 113 | Georgetown University |
| 107 | University of Colorado at Boulder |
| 102 | Southwestern Medical Center |
| 101 | University of Tennessee Memphis |
| 100 | Simon Fraser University |
| 100 | University of Wisconsin-System/Center campuses |
| 100 | University of Saskatchewan |
| 94 | University of Massachusetts |
| 68 | MD Anderson Cancer Center, U of Texas |
| 67 | University of Queensland, Australia |
| 54 | Brigham Young University |
| 52 | New York University |
| 47 | University of Miami |
| 44 | Wayne State University (old CrossfirePlusReactions login) |
| 43 | Bowling Green State University |
| 40 | Auburn University |
| 33 | Rockefeller University |
| 29 | Villanova University |
| 23 | Drexel |
| 20 | Northeast Louisiana University |
| 16 | Georgia State |
| 11 | Purdue University (old CrossfirePlusReactions login) |
| 11 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 9 | George Mason University |
| 7 | Connecticut College |
| 5 | Louisiana State University |
| 5 | University of South Florida |